Auxiliary event packages

1. A computer-implemented method comprising: registering, by a user device, with a proxy for an auxiliary event-package, wherein the auxiliary event-package is provided by a plurality of auxiliary event-package servers; subscribing to the auxiliary event-package through the proxy, wherein the proxy forwards the subscription to the plurality of auxiliary event-package servers; receiving, from each of the plurality of auxiliary event-package servers, an accept notification and an initial notify; selecting, by the user device, one of the plurality of auxiliary event-package servers as a primary handle for the auxiliary event-package, wherein selecting the one of the auxiliary event-package servers as the primary handle for the auxiliary event-package comprises receiving a first notify message from the one of the auxiliary event-package servers prior to a notify message from the others of the plurality of auxiliary event-package servers and wherein the user device is configured to publish to the primary handle; and identifying others of the plurality of auxiliary event-package servers as secondary handles for the auxiliary event-package, wherein the user device is operable to receive notifications from the primary handle and the secondary handles.

2. The computer-implemented method of claim 1 , wherein selecting, by the user device, the one of the auxiliary event-package servers as the primary handle for the auxiliary event-package further comprises indicating to the plurality of auxiliary event-package servers an identity of the primary handle from the plurality of auxiliary event-package servers and limiting notifications and publications to and from the auxiliary event-package to the primary handle.

3. The computer-implemented method of claim 1 , further comprising: executing the auxiliary event-package using the primary handle.

4. The computer-implemented method of claim 1 , further comprising: determining that the primary handle is unavailable to execute the auxiliary event-package; and identifying one of the secondary handles as a new primary handle.

5. The computer-implemented method of claim 1 , wherein the auxiliary event-package comprises at least one of a stateful event-package and a stateless event-package.

6. The computer-implemented method of claim 1 , further comprising: performing at least one of a refresh or a re-subscribe; and reestablishing server-affinity to the one of the auxiliary event-package servers.

7. The computer-implemented method of claim 1 , wherein subscribing to the auxiliary event-package through the proxy comprises subscribing to an auxiliary event-package server that accepts multiple subscriptions for each address of record.

8. The computer-implemented method of claim 1 , further comprising: subscribing to the auxiliary event-package at the one of the auxiliary event-package servers, wherein the auxiliary event-package servers has an existing session for the auxiliary event-package; and receiving a notification from the one of the auxiliary event-package servers indicating that the one of the auxiliary event-package servers has added the subscription to the existing session for the auxiliary event-package.

9. The computer-implemented method of claim 1 , wherein the auxiliary event-package comprises at least one of a location service and a presence service.

10. A device comprising: a memory to store a plurality of instructions; and a processor configured to execute instructions in the memory to: register with a proxy for an auxiliary event-package, wherein the auxiliary event-package is provided via a plurality of auxiliary event-package servers; subscribe to the auxiliary event-package through the proxy, wherein the proxy forwards the subscription to the plurality of auxiliary event-package servers; select one of the auxiliary event-package servers as a primary server for the auxiliary event-package, wherein selecting the one of the auxiliary event-package servers as the primary handle for the auxiliary event-package comprises receiving a first notify message from the one of the auxiliary event-package servers prior to a notify message from the others of the plurality of auxiliary event-package servers and wherein the device is configured to publish to the primary handle; and identify others of the plurality of auxiliary event-package servers as secondary servers for the auxiliary event-package.

11. The device of claim 10 , wherein when selecting the one of the auxiliary event-package servers as the primary server for the auxiliary event-package, the processor is configured to indicate to the plurality of auxiliary event-package servers an identity of the primary server from the plurality of auxiliary event-package servers and limit notifications and publications to and from the auxiliary event-package to the primary server.

12. The device of claim 10 , wherein the processor is further configured to execute the auxiliary event-package using the primary server.

13. The device of claim 10 , wherein the processor is further configured to: determine that the primary server is unavailable to execute the auxiliary event-package; and identify one of the secondary servers as a new primary server.

14. The device of claim 10 , wherein the processor is further configured to: perform at least one of a refresh or a re-subscribe; and reestablish server-affinity to the one of the auxiliary event-package servers.

15. The device of claim 10 , wherein the processor is further configured to subscribe to the auxiliary event-package at the one of the auxiliary event-package servers, wherein the auxiliary event-package servers has an existing session for the auxiliary event-package; and receive a notification from the one of the auxiliary event-package servers indicating that the one of the auxiliary event-package servers has added the subscription to the existing session for the auxiliary event-package.

16. A non-transitory computer-readable medium including instructions to be executed by a processor, the instructions including one or more instructions, which when executed by the processor, for causes the processor to: register, by a user device, with a proxy for an auxiliary event-package, wherein the auxiliary event-package is provided by a plurality of auxiliary event-package servers; subscribe to the auxiliary event-package through the proxy, wherein the proxy forwards the subscription to the plurality of auxiliary event-package servers; receive an initial notify message from one of the auxiliary event-package servers; select, by the user device, the one of the auxiliary event-package servers as a primary server for the auxiliary event-package, wherein selecting the one of the auxiliary event-package servers as the primary handle for the auxiliary event-package comprises receiving a first notify message from the one of the auxiliary event-package servers prior to a notify message from the others of the plurality of auxiliary event-package servers and wherein the user device is configured to publish to the primary handle; identify others of the plurality of auxiliary event-package servers as secondary servers for the auxiliary event-package; and execute the auxiliary event-package using the primary server.

17. The non-transitory computer-readable medium of claim 16 , where the one or more instructions further includes instructions for causing the processor to: determine that the primary server is unavailable to execute the auxiliary event-package; and identify one of the secondary servers as a new primary server.

18. A system comprising: a plurality of auxiliary event-package servers configured to provide an auxiliary event-package; a session initiation protocol (SIP) proxy; and a user device comprising: a memory to store a plurality of instructions; and a processor configured to execute instructions in the memory to: subscribe to the auxiliary event-package through the proxy, wherein the proxy forwards the subscription to the plurality of auxiliary event-package servers; receive a first initial notify message from one of the auxiliary event-package servers prior to a notify message from the others of the plurality of auxiliary event-package servers; select the one of the auxiliary event-package servers that sends the first initial notify message as a primary server for the auxiliary event-package, wherein the user device is configured to publish to the primary handle; and identify others of the plurality of auxiliary event-package servers as secondary servers for the auxiliary event-package; and a transceiver to transmit and receive SIP messages.